CN104901409B - What a kind of battery pack low pressure charged realizes device - Google Patents
What a kind of battery pack low pressure charged realizes device Download PDFInfo
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- CN104901409B CN104901409B CN201510374559.5A CN201510374559A CN104901409B CN 104901409 B CN104901409 B CN 104901409B CN 201510374559 A CN201510374559 A CN 201510374559A CN 104901409 B CN104901409 B CN 104901409B
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Abstract
The present invention relates to a kind of battery pack low pressure charge realize device, including charging module, interface module, relay module, switch module, battery module, charging monitoring module；The battery module is composed in series by multiple batteries, and a portion battery is designated as the first battery pack, and remainder battery is designated as the second battery pack；Charging module, charges for battery module for passing sequentially through interface module, relay module and switch module；Which is additionally operable to the charging completion signal for obtaining battery module, to control relay module in the first working condition or the second working condition.The present invention can allow single battery group trickle charge, while can quickly realize indirectly system equalization, and battery pack temperature can be allowed to be in controlled range by large current charge.
Description
Technical field
The present invention relates to a kind of battery pack low pressure charge realize device.
Background technology
With the increasingly consumption of non-renewable resources, haze weather is more and more frequent, development of the people to green novel energy source
Increasingly pay attention to.Particularly in recent years, electric motor car auxiliary facility is further perfect, using the electrical salf-walking of new forms of energy battery pack
Car, Sightseeing Trolley, electric automobile, electric bus etc. are more and more universal, and demand is also increasing.But, because battery pack is followed
The problems such as ring life-span is undesirable, the charging interval is long, strongly limit the popularization of electric motor car product.
At present, the common charging modes of market electric motor car product are：By assembled battery total voltage control, CC/ is then carried out
CV (constant current/constant voltage) charges.This mode concatenate impedance between the wire rod that passes through of different, electric current and battery pack because battery pack is shunted
Larger, during large current charge, easily appearance heat is unbalance, so the big voltage high-current charging of battery pack is dangerous；In addition, this side
Formula charge when, per Battery pack electric current be all it is relatively uniform, so, when there is situation in the uniformity of battery pack, battery
Group cycle life is shorter and shorter, and battery pack endurance is had a greatly reduced quality.Common prolongation by charge balancing mode is followed on the market
The method in ring life-span, its essence are discharged by plug-in resistance, allow voltage to fall same level.But, its process is non-
Chang Manchang, often simply intersperses for jumbo battery pack.The mode even with increase euqalizing current having is accelerated
Balancing speed, occurs in that heat is unbalance while as a result wasting the energy again, ultimately increases the safe things such as the on fire, blast of charging process
Therefore probability.
Can see from common charging solution, its control starting point for charging is battery pack series connection total voltage.It is first
First, when battery pack Individual cells module voltage is low needs trickle charge, because series quantity it is more, by assembled battery total voltage
Basic None- identified, when then the mode of CC (constant current) charges, low-voltage battery module will decay faster than other battery modules,
And such case will continue appearance in upper once circulation, then, the battery cyclic life-span constantly will shorten, the final table of battery pack
Reveal and be not increasingly durable.Secondly, when high-voltage large current charges, line loss and heating will be very serious, particularly when battery pack one
When there is situation in cause property, the service life that high-voltage large current charges battery pack is shortened, and in fact, market is most all
It is the charge mode of high voltage small current, is also based on safety and ensures that performance considers.Finally, some are by charge balancing mode
Ensure conforming way, which is in fact, for jumbo battery pack, short time adjustment effect is micro- little.If increasing equal
Weighing apparatus electric current, whole system temperature will rise again, another side, if using large current charge, whole system temperature may be out of control, finally
Security incident may be caused.
In sum, there is following defect in existing charging modes：
A, battery pack certain low-voltage module can not be judged, then individually take trickle charge；
B, be not suitable for carrying out large current charge, particularly when the uniformity of battery pack is deteriorated；
C, the mode with charge balancing charge, and time for balance is very long, DeGrain, in some instances it may even be possible to occur temperature drift or
Out-of-control condition.
The content of the invention
For the deficiencies in the prior art, the purpose of the present invention is intended to offer one kind can allow single battery group trickle to fill
Electricity, while can quickly realize indirectly system equalization, and battery pack temperature can be allowed in controlled range by large current charge
What battery pack low pressure charged realizes device.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of what battery pack low pressure charged realize device, including charging module, interface module, relay module,
Switch module, battery module, charging monitoring module；The battery module is composed in series by multiple batteries, a portion
Battery is designated as the first battery pack, and remainder battery is designated as the second battery pack；
Charging module, for passing sequentially through interface module, relay module and switch module for battery pack mould
Block charges；Which is additionally operable to the charging completion signal for obtaining battery module, controlling relay module in the first working condition or
Second working condition；Switch module is connected with the first battery pack by first working condition for relay module, and electric by second
Pond group is disconnected with switch module；Switch module is connected with the second battery pack by second working condition for relay module, and will
First battery pack is disconnected with switch module；The charging completion signal is the first battery pack or all batteries in the second battery pack
In charging complete state；
Charging monitoring module, for detecting the first battery pack or the cell voltage in the second battery pack, fills when battery is in
During electric completion status, the battery in charging complete state is disconnected with relay module by switch module.
Preferably, the switch module includes the switch element equal with number of batteries, and each switch element includes one
Metal-oxide-semiconductor and a diode, the metal-oxide-semiconductor are in parallel with diode, the negative pole of each diode with corresponding battery just
Extremely it is connected, the positive pole of each diode is corresponding with relay module to be connected；
The grid G of each metal-oxide-semiconductor is connected with charging monitoring module, the source S of each metal-oxide-semiconductor with corresponding diode
Positive pole be connected, the drain D of each metal-oxide-semiconductor is connected with the negative pole of accordingly diode.
Preferably, the charging module include the power supply unit first voltage comparator equal with number of batteries,
One logic control element and the first charging voltage monitoring unit；
Said supply unit is that the battery in battery module charges by interface module；Wherein each first voltage
The in-phase input end of comparator is connected with the positive pole of corresponding battery, and the reverse input end of each second voltage comparator leads to
Reference voltage ground connection is crossed, the output end of each first voltage comparator is connected with the first charging voltage monitoring unit；
The first charging voltage monitoring unit is corresponding with the first logic control element to be connected；The first logic control list
Unit obtains the charging completion signal of the first battery pack by interface module, to control relay module in the second work shape
State.
Preferably, first logic control element is also connected with relay module by one first delay unit.
Preferably, the charging monitoring module includes the second voltage comparator equal with number of batteries, the second charging electricity
Pressure monitoring unit and the second logic control element；
Wherein the in-phase input end of each second voltage comparator is connected with the positive pole of corresponding battery, and each is second electric
The reverse input end of pressure comparator is grounded by a reference voltage, and the output end of each second voltage comparator is filled with second
Piezoelectric voltage monitoring unit is connected；
The second charging voltage monitoring unit is corresponding with the second logic control element to be connected；The second logic control list
Unit is connected with the grid G of each metal-oxide-semiconductor, after the battery in the second logic control element monitors battery module is full of, then
The metal-oxide-semiconductor of control connection corresponding with the battery disconnects；
When the second logic control element monitors that relay module is in the second working condition, then control each metal-oxide-semiconductor and lead
It is logical, so that the second battery pack is in charged state, and it is off the first battery pack.
Preferably, the output end of each second voltage comparator passes through one second delay unit and the second charging voltage is supervised
Survey unit to be connected.
Preferably, the relay module is a relay group.
Beneficial effects of the present invention are as follows：
What the battery pack low pressure charged realizes that device implementation is simple, reliable operation.Every section not only can effectively be carried out
The single low pressure charge control of battery, can allow single battery group trickle charge, and the collocation of battery pack can be so effectively ensured
Uniformity.Large current charge can also be realized simultaneously, so as to quickly realize indirectly system equalization, and battery pack temperature can be allowed to be in
Controlled range.Furthermore which can also effectively extend the cycle life of battery pack, it is ensured that the security that battery pack charges.
Description of the drawings
Fig. 1 is the module map of the better embodiment for realizing device that battery pack low pressure of the present invention charges.
Fig. 2 is the circuit diagram that the first battery pack for realizing device that battery pack low pressure of the present invention charges charges.
Fig. 3 is the circuit diagram that the second battery pack for realizing device that battery pack low pressure of the present invention charges charges.
Specific embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention is described further：
Refer to Fig. 1 to Fig. 3, the present invention relates to a kind of battery pack low pressure charge realize device, its better embodiment
Including charging module, interface module, relay module, switch module, battery module, charging monitoring module；Battery
Group module is composed in series by multiple batteries, and a portion battery is designated as the first battery pack, and it is electric that remainder battery is designated as second
Pond group.Wherein relay module is a relay group.
Charging module, for passing sequentially through interface module, relay module and switch module for battery pack mould
Block charges；Which is additionally operable to the charging completion signal for obtaining battery module, controlling relay module in the first working condition or
Second working condition；Switch module is connected with the first battery pack by the first working condition for relay module, and by the second battery pack
Disconnect with switch module；Switch module is connected with the second battery pack by the second working condition for relay module, and by the first battery
Group is disconnected with switch module；Charging completion signal is that the first battery pack or all batteries in the second battery pack are in charging complete
State.
Charging monitoring module, for detecting the first battery pack or the cell voltage in the second battery pack, fills when battery is in
During electric completion status, the battery in charging complete state is disconnected with relay module by switch module.
Specifically, when charging module access interface circuit module is that battery module charges, which is individually for battery
Each battery (Battery1, Battery2 ... BatteryN) in group module carries out the trickle of low-voltage, CC (constant current) or CV
(constant pressure) charges.Battery module forms 2 charging balanced protections electricity also by being connected with charging monitoring module in addition
Road.
In the present embodiment, the first battery pack is odd number battery pack (Battery1, Battery3 ...), and the second battery pack is
Even number battery pack (Battery2, Battery4 ...).Wherein region (1-2) is comprising Battery1, Battery2；Region (3-
4) comprising Battery3, Battery4；Comprising Battery5, Battery6 ..., region (N-1-N) is included in region (5-6)
Battery N-1、Battery N。
Further, switch module can include the switch element equal with number of batteries, and each switch element includes
One metal-oxide-semiconductor and a diode, metal-oxide-semiconductor are in parallel with diode, the positive pole of the negative pole of each diode with corresponding battery
It is connected, the positive pole of each diode is corresponding with relay module to be connected.
The grid G of each metal-oxide-semiconductor is connected with charging monitoring module, the source S of each metal-oxide-semiconductor with corresponding diode
Positive pole be connected, the drain D of each metal-oxide-semiconductor is connected with the negative pole of accordingly diode.
It is further preferred that the charging module includes power supply unit, the first voltage ratio equal with number of batteries
Compared with device, the first logic control element and the first charging voltage monitoring unit.
Power supply unit is that the battery in battery module charges by interface module；Wherein each first voltage compares
The in-phase input end of device is connected with the positive pole of corresponding battery, and the reverse input end of each second voltage comparator passes through one
Reference voltage is grounded, and the output end of each first voltage comparator is connected with the first charging voltage monitoring unit.
First charging voltage monitoring unit is corresponding with the first logic control element to be connected；First logic control element leads to
The charging completion signal that interface module obtains the first battery pack is crossed, relay module is controlled in the second working condition.
Specifically, the charhing unit in charging module is by multigroup independent transformer and the independent electrical on non-co- ground
Road, final process into automatic identification, with trickle, CC (constant current), CV (constant pressure) pattern charging module.Charhing unit is respectively
Region (1-2), region (3-4) ... region (N-1-N) provide independent region charging voltage V (1-2), V (3-4) ... V (N-1-
N)。
It is further preferred that the first logic control element is also connected with relay module by one first delay unit.
Furthermore, charging monitoring module includes the second voltage comparator equal with number of batteries, the monitoring of the second charging voltage
Unit and the second logic control element.
Wherein the in-phase input end of each second voltage comparator is connected with the positive pole of corresponding battery, and each is second electric
The reverse input end of pressure comparator is grounded by a reference voltage, and the output end of each second voltage comparator is filled with second
Piezoelectric voltage monitoring unit is connected.
Second charging voltage monitoring unit is corresponding with the second logic control element to be connected；Second logic control element with
The grid G of each metal-oxide-semiconductor is connected, and after the battery in the second logic control element monitors battery module is full of, then controls
The metal-oxide-semiconductor of connection corresponding with the battery disconnects.
When the second logic control element monitors that relay module is in the second working condition, then control each metal-oxide-semiconductor and lead
It is logical, so that the second battery pack is in charged state, and it is off the first battery pack.
Wherein, charging monitoring module can charge for region and provide reference voltage Vref and guarantee low pressure charging process region
Uniqueness, such as：Odd number battery pack in battery pack enters charged state, and now the even number battery pack in system is not located to charge
State, i.e. even number battery pack are off.Cell voltage only in odd number battery pack all meets reference voltage Vref
The charging of even number battery pack can be just gone to, the cell voltage uniformity of even number and odd zone is finally realized.In addition, because of the side charged
Formula is independently-powered using battery module region, and such as V (1-2), V (3-4), V (5-6) ... events charging process do not have battery strings
Connect the heating that impedance causes.Meanwhile, because battery charging uniformity be by way of making up energy and time delay and charging realizing,
There is no the serious fever phenomenon brought by charging resistor equilibrium, it is possible to using the mode of large current charge yet.
Further, the output end of each second voltage comparator passes through one second delay unit and the second charging electricity
Pressure monitoring unit is connected.
In the present embodiment, the specific operation principle for realizing device that the battery pack low pressure charges is as follows：
As shown in Fig. 2 original state is, the grid G 1 of the metal-oxide-semiconductor in switch module, grid G N is closed grid G 2 ...,
Relay module is now defaulted as the charging of odd number battery pack.That is odd number battery pack (Battery1, Battery3, Battery5 ...) place
In charged state, off-state of the even number battery pack (Battery2, Battery4, Battery6 ...) in not charging.
When any battery in odd number battery pack (Battery1, Battery3, Battery5 ...) reaches charging setting value
When (such as：Cobalt acid lithium battery 4.2V completely fills), charging monitoring module and charging module can receive corresponding battery and fill
The signal that electricity is completed.When the charging completion signal (even number battery is in the same manner) of certain battery in odd number battery pack is by first voltage
Comparator or the sampling of second voltage comparator are obtained, the voltage meeting that first voltage comparator (second voltage comparator is in the same manner) overturns
Operation control is carried out into the first logic control element by the first charging voltage monitoring unit.
I.e., first, after charging monitoring module receives the charging completion signal of certain battery, then by the second logic control
Unit exports a low level to control the closing of the metal-oxide-semiconductor of the negative pole connection of correspondence battery.Meanwhile, charging module is received
To after the charging completion signal of certain battery, then corresponding battery charging completion signal is received simultaneously by the first logic control element
Added up.It is after the charging completion signal of all batteries during the first logic control element have received odd number battery pack, then defeated
Going out carries out switch switching with control relay module with control signal, i.e., so that relay module is in the second working condition.Place
Feed back second logic control circuit of the signal to charging monitoring modular immediately in the relay of the second working condition, then second
Logic control circuit all exports high level, so that all of metal-oxide-semiconductor is all turned on (restPose).
Now as Fig. 3 even number battery packs (Battery2, Battery4, Battery6 ...) enters charged state, its charging
The charging process of process and odd number battery pack (Battery1, Battery3, Battery5 ...) is in the same manner.Generally speaking, work as battery
When group uniformity becomes undesirable, the battery of low voltage will be into trickle charge pattern, and other normal batteries will be into CC
Constant current charging mode.After the battery of CC constant-current charges is charged to setting value in advance, because the MOS of negative pole end has been opened and closed, and charge
The first logic control circuit in supply module does not meet the control signal of output conversion relay module working condition, so, carry
The battery for waiting low-voltage always is connected between the front battery for completely filling, until low-voltage battery is charged to setting voltage value (by first
Voltage comparator or second voltage comparator are easily determined this value), this mode compensate for the lack of uniformity of battery pack charging.
Because unbalanced battery is made up by way of charging, temperature change very little, the temperature that there is no power consumption balanced way
Problem out of control.
Delay circuit in the present embodiment belongs to judge time delay, it is to avoid some very sensitive signal interference in application.
For a person skilled in the art, technical scheme that can be as described above and design, make other each
Plant corresponding change and deform, and all these changes and deforms the protection model that should all belong to the claims in the present invention
Within enclosing.
Claims (7)
1. what a kind of battery pack low pressure charged realizes device, it is characterised in that：
Including charging module, interface module, relay module, switch module, battery module, charging monitoring module；
The battery module is composed in series by multiple batteries, and a portion battery is designated as the first battery pack, remainder battery note
For the second battery pack；
Charging module, fills for battery module for passing sequentially through interface module, relay module and switch module
Electricity；Which is additionally operable to the charging completion signal for obtaining battery module, to control relay module in the first working condition or second
Working condition；Switch module is connected with the first battery pack by first working condition for relay module, and by the second battery pack
Disconnect with switch module；Switch module is connected with the second battery pack by second working condition for relay module, and by first
Battery pack is disconnected with switch module；The charging completion signal is that the first battery pack or all batteries in the second battery pack are in
Charging complete state；
Charging monitoring module, for detecting the first battery pack or the cell voltage in the second battery pack, has charged when battery is in
During into state, the battery in charging complete state is disconnected with relay module by switch module.
2. what battery pack low pressure as claimed in claim 1 charged realizes device, it is characterised in that：
The switch module includes the switch element equal with number of batteries, and each switch element includes a metal-oxide-semiconductor and
Diode, the metal-oxide-semiconductor are in parallel with diode, and the negative pole of each diode is connected with the positive pole of corresponding battery, each
The positive pole of diode is corresponding with relay module to be connected；
The grid G of each metal-oxide-semiconductor is connected with charging monitoring module, the source S of each metal-oxide-semiconductor with corresponding diode just
Extremely it is connected, the drain D of each metal-oxide-semiconductor is connected with the negative pole of accordingly diode.
3. what battery pack low pressure as claimed in claim 2 charged realizes device, it is characterised in that：
The charging module includes the power supply unit first voltage comparator equal with number of batteries, the first logic control
Unit and the first charging voltage monitoring unit；
Said supply unit is that the battery in battery module charges by interface module；Wherein each first voltage compares
The in-phase input end of device is connected with the positive pole of corresponding battery, and the reverse input end of each second voltage comparator passes through one
Reference voltage is grounded, and the output end of each first voltage comparator is connected with the first charging voltage monitoring unit；
The first charging voltage monitoring unit is corresponding with the first logic control element to be connected；First logic control element leads to
The charging completion signal that interface module obtains the first battery pack is crossed, relay module is controlled in the second working condition.
4. what battery pack low pressure as claimed in claim 3 charged realizes device, it is characterised in that：The first logic control list
Unit is also connected with relay module by one first delay unit.
5. what battery pack low pressure as claimed in claim 3 charged realizes device, it is characterised in that：
The charging monitoring module include the second voltage comparator equal with number of batteries, the second charging voltage monitoring unit with
And second logic control element；
Wherein the in-phase input end of each second voltage comparator is connected with the positive pole of corresponding battery, each second voltage ratio
It is grounded by a reference voltage compared with the reverse input end of device, the output end of each second voltage comparator is electric with the second charging
Pressure monitoring unit is connected；
The second charging voltage monitoring unit is corresponding with the second logic control element to be connected；Second logic control element with
The grid G of each metal-oxide-semiconductor is connected, and after the battery in the second logic control element monitors battery module is full of, then controls
The metal-oxide-semiconductor of connection corresponding with the battery disconnects；
When the second logic control element monitors that relay module is in the second working condition, then control each metal-oxide-semiconductor and turn on, with
The second battery pack is made in charged state, and is off the first battery pack.
6. what battery pack low pressure as claimed in claim 5 charged realizes device, it is characterised in that：Each second voltage comparator
Output end be connected with the second charging voltage monitoring unit by one second delay unit.
7. what the battery pack low pressure as described in claim 1 to 6 any one charged realizes device, it is characterised in that：It is described after
Electric module is a relay group.
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| CN201510374559.5A CN104901409B (en) | 2015-06-30 | 2015-06-30 | What a kind of battery pack low pressure charged realizes device |
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|---|---|---|---|
| CN201510374559.5A CN104901409B (en) | 2015-06-30 | 2015-06-30 | What a kind of battery pack low pressure charged realizes device |
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| CN104901409B true CN104901409B (en) | 2017-03-29 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106786868A (en) * | 2016-12-16 | 2017-05-31 | 宇龙计算机通信科技(深圳)有限公司 | Charging device and charging method |
| CN106786962B (en) | 2017-01-13 | 2019-12-10 | Oppo广东移动通信有限公司 | Charging control method and device and terminal |
| CN110266066B (en) * | 2019-05-05 | 2021-10-22 | 江苏苏美达机电有限公司 | Charging control device and charging control method for parallel connection of multiple lithium battery packs |
| CN116711178A (en) * | 2021-12-30 | 2023-09-05 | 宁德时代新能源科技股份有限公司 | Battery control circuit, method and power utilization device |
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| JP2000197273A (en) * | 1998-12-25 | 2000-07-14 | Fujitsu Denso Ltd | Charging and discharging apparatus |
| CN102891508A (en) * | 2011-07-19 | 2013-01-23 | 株式会社丰田自动织机 | Charge and discharge control apparatus |
| CN103904727A (en) * | 2013-12-29 | 2014-07-02 | 毛勇彪 | Combined general type power management balancer applied to multiple batteries and working method thereof |
| US8933669B2 (en) * | 2012-11-08 | 2015-01-13 | Peak Power & Mfg., Inc. | Reclaiming energy stored in rechargeable batteries for charging other batteries |
| CN204928340U (en) * | 2015-06-30 | 2015-12-30 | 深圳市卓能新能源科技有限公司 | Realization device that group battery low pressure is charged |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000197273A (en) * | 1998-12-25 | 2000-07-14 | Fujitsu Denso Ltd | Charging and discharging apparatus |
| CN102891508A (en) * | 2011-07-19 | 2013-01-23 | 株式会社丰田自动织机 | Charge and discharge control apparatus |
| US8933669B2 (en) * | 2012-11-08 | 2015-01-13 | Peak Power & Mfg., Inc. | Reclaiming energy stored in rechargeable batteries for charging other batteries |
| CN103904727A (en) * | 2013-12-29 | 2014-07-02 | 毛勇彪 | Combined general type power management balancer applied to multiple batteries and working method thereof |
| CN204928340U (en) * | 2015-06-30 | 2015-12-30 | 深圳市卓能新能源科技有限公司 | Realization device that group battery low pressure is charged |
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